Which of the following is a correct about PHP?
Q 2 – Which of the following is correct about PHP? A – PHP performs system functions, i.e. from files on a system it can create, open, read, write, and close them. B – PHP can handle forms, i.e. gather data from files, save data to a file, thru email you can send data, return data to the user.
Which of the following is correct about constants in PHP?
Q 2 – Which of the following is correct about constants vs variables in PHP? A – There is no need to write a dollar sign ($) before a constant, where as in Variable one has to write a dollar sign. B – Constants cannot be defined by simple assignment, they may only be defined using the define() function.
Which of the following is correct about variable naming rules?
A – Variable names must begin with a letter or underscore character. B – A variable name can consist of numbers, letters, underscores. C – you cannot use characters like + , – , % , ( , ) .
Which of the following type of variables have only two possible values either true or false?
The true or false variable, also known as boolean, is a type of variable that only has two possible values, true or false.
What is PHP What does PHP do?
PHP is a server side scripting language that is embedded in HTML. It is used to manage dynamic content, databases, session tracking, even build entire e-commerce sites. It is integrated with a number of popular databases, including MySQL, PostgreSQL, Oracle, Sybase, Informix, and Microsoft SQL Server.
Which of the following is are a PHP code editor editor?
|Que.||Which of the following is/are a PHP code editor? i) Notepad ii) Notepad++ iii) Adobe Dreamweaver iv) PDT|
|b.||All of the mentioned.|
|c.||i), ii) and iii)|
|Answer:All of the mentioned.|
Which of the following is correct to add a comment in PHP?
PHP supports single-line and multi-line comments. There are two ways to use single-line comments in PHP. For multiple lines comment in PHP, we need to enclose all lines within /* ….. */.
What should be the correct syntax to write PHP code?
The correct option is (c) <? ?> The explanation is: Every section of PHP code starts and ends by turning on and off PHP tags to let the server know that it needs to execute the PHP in between them.
Which of the following is the correct way to create an array in PHP?
Which of the following are correct ways of creating an array? Explanation: A variable name should start with $ symbol which is not present in i) and you need not put the square brackets when you use the array() constructor.
Which of the following variable is used for the PHP script name?
|Sr.No||Variable & Description|
|8||$_SESSION An associative array containing session variables available to the current script.|
|9||$_PHP_SELF A string containing PHP script file name in which it is called.|
|10||$php_errormsg $php_errormsg is a variable containing the text of the last error message generated by PHP.|
What are the rules for naming a PHP variable?
Rules for PHP variables:
- A variable starts with the $ sign, followed by the name of the variable.
- A variable name must start with a letter or the underscore character.
- A variable name cannot start with a number.
- A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ )
Which is the correct variable name?
All variable names must begin with a letter of the alphabet or an underscore(_). After the first initial letter, variable names can also contain letters and numbers. Variable names are case sensitive.
Which of the following are PHP data types?
PHP supports the following data types:
- Float (floating point numbers – also called double)
Which two compound data types are supported PHP?
PHP has two compound types including array and object.
What are variables in PHP?
A variable in PHP is a name of memory location that holds data. In PHP, a variable is declared using $ sign followed by variable name. The main way to store information in the middle of a PHP program is by using a variable. … The value of a variable is the value of its most recent assignment.